sputtering and backfiring when under 2k rpm

[dj99877]

ok so lately I have noticed that when I am driving at a low rpm lets say in between 1,000 to 2,000 my car will sputter and backfire when i put on the gas. it sounds and feels as if the spark plugs aren't firing correctly or something. but after 2k rpm's it is fine and i have all the power in the world.. ( well as much as a 420a can offer) I changed the spark plugs and gaped them accordingly and everything was fine for a while. now its back to being all sputtery. does anyone have any suggestions?

 

[turbo_dsm]

check your wires and ignition coil

 

[talontsi1225]

Plug wires spec for resistance is 7 ohms per foot max if i remember right.